these traits and characteristics. The accumulation of these changes can lead, in principle, to the emergence of new properties, or to the abolition of old ones.
Animals and machines are not supposed to possess free will or exercise it. What, then, about fusions of machines and humans (bionics)? At which point does a human turn into a machine? And why should we assume that free will ceases to exist at that - rather arbitrary - point?
Introspection - the ability to construct self-referential and recursive models of the world - is supposed to be a uniquely human quality. What about introspective machines? Surely, say the critics, such machines are PROGRAMMED to introspect, as opposed to humans. To qualify as introspection, it must be WILLED, they continue. Yet, if introspection is willed - WHO wills it? Self-willed introspection leads to infinite regression and formal logical paradoxes.
Moreover, the notion - if not the formal concept - of "human" rests on many hidden assumptions and conventions.
Political correctness notwithstanding - why presume that men and women (or different races) are identically human? Aristotle thought they were not. A lot separates males from females - genetically (both genotype and phenotype) and environmentally (culturally). What is common to these two sub-species that makes them both "human"?
Can we conceive of a human without body (i.e., a Platonian Form, or soul)? Aristotle and Thomas Aquinas think not. A soul has no existence separate from the body. A machine-supported energy field with mental states similar to ours today - would it be considered human? What about someone in a state of coma - is he or she (or it) fully human?
Is a new born baby human - or, at least, fully human - and, if so, in which sense? What about a future human race - whose features would be unrecognizable to us? Machine-based intelligence - would it be thought of as human? If yes, when would it be considered human?
In all these deliberations, we may be confusing "human" with "person". The former is a private case of the latter. Locke's person is a moral agent, a being responsible for its actions. It is constituted by the continuity of its mental states accessible to introspection.
Locke's is a functional definition. It readily accommodates non-human persons (machines, energy matrices) if the functional conditions are satisfied. Thus, an android which meets the prescribed requirements is more human than a brain dead person.
Descartes' objection that one cannot specify conditions of singularity and identity over time for disembodied souls is right only if we assume that such "souls" possess no energy. A bodiless intelligent energy matrix which maintains its form and identity over time is conceivable. Certain AI and genetic software programs already do it.
Strawson is Cartesian and Kantian in his definition of a "person" as a "primitive". Both the corporeal predicates and those pertaining to mental states apply equally, simultaneously, and inseparably to all the individuals of that type of entity. Human beings are one such entity. Some, like Wiggins, limit the list of possible persons to animals - but this is far from rigorously necessary and is unduly restrictive.
The truth is probably in a synthesis:
A person is any type of fundamental and irreducible entity whose typical physical individuals (i.e., members) are capable of continuously experiencing a range of states of consciousness and permanently having a list of psychological attributes.
This definition allows for non-animal persons and recognizes the personhood of a brain damaged human ("capable of experiencing"). It also incorporates Locke's view of humans as possessing an ontological status similar to "clubs" or "nations" - their personal identity consists of a variety of interconnected psychological continuities.
And Then There Were Too Many
By: Sam Vaknin
The latest census in Ukraine revealed an apocalyptic drop of 10% in its population - from 52.5 million a decade ago to a mere 47.5 million last year. Demographers predict a precipitous decline of one third in Russia's impoverished, inebriated, disillusioned, and ageing citizenry. Births in many countries in the rich, industrialized, West are below the replacement rate. These bastions of conspicuous affluence are shriveling.
Scholars and decision-makers - once terrified by the Malthusian dystopia of a "population bomb" - are more sanguine now. Advances in agricultural technology eradicated hunger even in teeming places like India and China. And then there is the old idea of progress: birth rates tend to decline with higher education levels and growing incomes. Family planning has had resounding successes in places as diverse as Thailand, China, and western Africa.
In the near past, fecundity used to compensate for infant mortality. As the latter declined - so did the former. Children are means of production in many destitute countries. Hence the inordinately large families of the past - a form of insurance against the economic outcomes of the inevitable demise of some of one's off-spring.
Yet, despite these trends, the world's
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